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EFFECTS OF B ON THE MICROSTRUCTURE AND HYDROGEN RESISTANCE PERFORMANCE OF Fe-Ni BASE ALLOY
Zhao Mingjiu; Rong Lijian
Corresponding AuthorRong Lijian(ljrong@imr.ac.cn)
2009-02-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume45Issue:2Pages:167-172
AbstractEffects of B on the microstructure and hydrogen resistance performance in an Fe-Ni base alloy were investigated by means of optical microscopy, scanning electron microscopy, thermal hydrogen charging experiments and tensile tests. The results show that abundant eta(Ni(3)Ti) phases precipitate at grain boundaries (GBs) in the alloy without boron (FN) after aging treatment, while only it few carbides precipitate at GBs in the alloy with boron (FNB). Tensile tests indicate that the FNB exhibites not only higher ductility but also lower hydrogen-induced ductility loss than those for FN alloy. Fracture observations show that the brittle intergranular fracture is the main feature of peak aging and over aging FN alloy and quite a few secondary cracks can be observed on fracture surface of the hydrogen charged samples due to the precipitation of eta phase at GBs. However, the intragranular fracture is dominant feature for the FNB alloy whether hydrogen charging or not.
KeywordFe-Ni base alloy B eta phase hydrogen induced ductility loss
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000264304600007
PublisherSCIENCE PRESS
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/98603
Collection中国科学院金属研究所
Corresponding AuthorRong Lijian
AffiliationChinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhao Mingjiu,Rong Lijian. EFFECTS OF B ON THE MICROSTRUCTURE AND HYDROGEN RESISTANCE PERFORMANCE OF Fe-Ni BASE ALLOY[J]. ACTA METALLURGICA SINICA,2009,45(2):167-172.
APA Zhao Mingjiu,&Rong Lijian.(2009).EFFECTS OF B ON THE MICROSTRUCTURE AND HYDROGEN RESISTANCE PERFORMANCE OF Fe-Ni BASE ALLOY.ACTA METALLURGICA SINICA,45(2),167-172.
MLA Zhao Mingjiu,et al."EFFECTS OF B ON THE MICROSTRUCTURE AND HYDROGEN RESISTANCE PERFORMANCE OF Fe-Ni BASE ALLOY".ACTA METALLURGICA SINICA 45.2(2009):167-172.
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